Police said late Friday night that five people were arrested on second-degree disorderly conduct charges. Four of them were booked into the Multnomah County Jail and the fifth was issued a citation.
https://wsbt.com/news/nation-world/portland-protests-large-c...
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Joanna Colwell was also arrested and issued a citation by police.
https://vtdigger.org/2019/07/29/19-arrested-as-hundred-prote...

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Those arrested were issued a citation for failure to obey and illegally walking on a highway.
https://baltimore.cbslocal.com/2016/07/17/65-protesters-arre...

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The Kansas City Star reported that Nigro was one of 76 people arrested in connection with the June 11 protests, and that everyone arrested was issued a citation that carries a maximum penalty of 90 days in jail or a $1,000 fine.
https://pressfreedomtracker.us/all-incidents/photojournalist...

Yes, the police can stop you and ask for documents that show who you are. When you are stopped on the street and asked your name, date of birth, address, or to show your ID, it is called a "street check". This is also known as "carding"